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STEAM BOILER. No. 353,752. Patented Dec; 7, 1886.

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NITED STATES PATENT OFFICEO ELISHA D. MORE, OF NEW YORK, N. Y.

STEAM-BOILER.

SPECIFICATION forming part of Letters Patent No. 353,752, dated'December 7, 1886.

Application filed June 18,1886. Serial No. 205,531. (NO lnOtlO'J To all whom it may concern.-

Be it known that I, ELISHA D. MORE, a subject of the Queen of Great Britain,residing in the city, county, and State of New York,have invented certain new and useful Improvements in Steam-Boilers, of which the following is a specification, reference being had to the accompanying drawings.

My invention relates specially to improvements in steam-boilers carrying low pressures, constructed and adapted to house or building heating purposes.

The object of my improvements is to cheapen the construction and improve the efficiency and economy of the same as far as possible in their daily operation.

To attain such object my improvements consistin forming the sides of the boiler and waterlegs of corrugated metal,whereby an increased heating-surface exposureis effected in proportion to the depth or radius ofthe corrugations.

Other improvements consist in suspending from the CIOWDSllBBl] a circular water-lcg,concentric with the outer circle of the boiler,and having the sides thereof composed of corrugated metal for increasing the heating-surface expo-ure.

Uther improvements consist in connecting the outer circular water-leg of the boiler with the inner suspended water leg by tubular passages to assist in the circulation and handling of the water within the boiler.

Other improvements consist in the combination of an upper independent circular steamchamber with the circular vertical boiler constructed in all its vertical sides of corrugated metal, whereby the steam is thoroughly dried and superheated before passing out to be used for heating or other purposes.

Other improvements consistin the combina tion of the several portions collectively or with each other, as may be hereinafter shown and described.

In the drawings, Figures 1 and 2 represent consecutively a horizontal and vertical section of a boiler embodying myimprov'ements.

Similar letters of reference designate like parts in both the figures.

A designates the tire-box; B, the grate.

O designates the inner suspended circular water-leg, provided with vertical corrugated sides.

D designates the outer circular water leg, provided with vertical corrugated sides forming the main cylindrical body of the boiler. The outer shell of this water-leg is continued up some distance to form an upper water and steam space. The inner corrugated shell of the outer water-leg and the outer corrugated shell of the inner circular water-leg are joined by the flue or tube sheet 11, and the inner shell ofthe inner circular water-leg is continued up the same height as the outer corrugated shell portion, and the two are joined by an upper tube or flue sheet, is, between which and h the flues I extend, opening comm unication between the furnace and the outer flue-connections.

E and F are annular flues, extending down and up without the boiler.

G is the outer wall of the boiler construction, and incloses the flue F, to carry the products of combustion up and through the chamber L, and thence out, as shown by. the arrows, through the flue M.

K is the steam-chamber, connected with the steam-space of boiler proper by tubes 0 c.

J is the selffeeding magazine, passing through the upper independent steam-chamber, K, and down through the upper water and steam chamber of the boiler and the inner circular water-leg, G.

For the purpose of a more direct draft, a damper, N, set concentric with and operating about the circular partition between the fines E and F, opens the holes e e, to permit the products of combustion to pass directly through and out, instead of passing down through E and up through E.

Dividing-plates g g are located within both inner and outer waterlegs, to assist the circulation of water within. a represents the furnace-door; b, theash-pit door; (Z, awater-gage.

P designates the connecting water-Ways between the outer and inner water-legs,D and O, of the boiler.

What I claim as new, and desire to secure by Letters Patent, is-

1. In combination with a steam-boiler consisting of two annularwater-chambers having the sides corrugated, connected, and arranged ICO ' central self-feeding magazine, J ,flues I',damper N, upper portions of fines E'and F, and the fines L and M, substantially as and for purposes specified.

3; A steam-boiler constructed substantially as shown and described, in combination with the fines I, F, E, L, and M, and the concentric damperN,the whole-constructed and arranged for joint operation, substantially as shown and described. j

4;. In combination with a steam-boiler, substantally as shown and described, "the independent steam-chamberK,the steam-connect ing tubes 0, the fines I, the damper N, the holes e, and the uptakes or fines L and M, whereby the products of co mbnstion are caused to impinge against the bottom plate of the steam-chamber K, pass upward about the cylindrical sides of .the same, and thence over the top plate to the flue,snbstantially asshown and described.

ELISHA D. MORE.

Witnesses:

C. A. SHAW, JAMES CHRISTIAN 

